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| Number | Title | Issue Date |
| 5488657 | Apparatus for and method of operating an automatic log on/log off circuit in a telephone system by disconnecting a headset Existing automatic log on/log off systems in telephone systems determine whether or not a workstation is occupied, and that calls can be directed to that workstation, by determining whether or not the amplifier that provides the interface between the tele... | 01/30/1996 |
| 5450496 | Communications headset having a detachable receiver capsule and cable pivot A communications headset is disclosed having a detachable receiver capsule rotatably and pivotally attached to a main body, and a cable pivot for allowing the headset connection cable to pivot with respect to the receiver capsule. This combination of feat... | 09/12/1995 |
| 5414769 | Articulated headset support A communication headset is provided which includes two curved housings that rotate with respect to one another to allow the headset to be held firmly in place over one ear of the user. One housing supports a microphone boom which has a free end positionab... | 05/09/1995 |
| 5381486 | Communications headset having a universal joint-mounted microphone boom A communication headset is disclosed having a microphone for transmitting the user's voice and a receiver for transmitting audio signals into the user's ear. In a monaural configuration, the headset includes a resilient, generally U-shaped headband, to be... | 01/10/1995 |
| 5353347 | Telephone headset amplifier with battery saver, receive line noise reduction, and click-free mute switching An amplifier for amplifying a signal received on a telephone line and for providing the amplified signal to a telephone headset. The amplifier draws current from a battery. The current drawn is reduced in the absence of activity on the line. The amplifier... | 10/04/1994 |
| 5260997 | Articulated headset A communication headset is provided which includes two curved housings that rotate with respect to one another to allow the headset to be held firmly in place over one ear of the user. One housing supports a microphone boom which has a free end positionab... | 11/09/1993 |
| 5226077 | Headset amplifier with automatic log on/log off detection Existing automatic log on/log off systems in telephone systems determine whether or not a workstation is occupied, and that calls can be directed to that workstation, by determining whether or not the amplifier that provides the interface between the tele... | 07/06/1993 |
| 5070527 | Time dependant, variable amplitude threshold output circuit for frequency variant and frequency invarient signal discrimination An audio compression system wherein the compression theshold may be adjusted to a calibrated level. The audio compression system is utilizable in a receiver system whereinan audio input signal received by the receiver system via a communications channel i... | 12/03/1991 |
| 4926961 | Hinged acoustical voice tube An acoustical voice tube, comprising an acoustical hollow upper piece and an acoustical hollow lower piece in hinged connection permits voice or sound tube positioning over a large area without changing the sound characteristics.... | 05/22/1990 |
| 4928307 | Time dependent, variable amplitude threshold output circuit for frequency variant and frequency invariant signal discrimination A voice signal compression system wherein the compression threshold may be adjusted to a calibrated level. The system includes a variable gain amplifier for amplifying a voice input signal based on the application of a variable control voltage. A driver i... | 05/22/1990 |
| 4864610 | Earpiece for a telephone headset An earpiece for use with a post-auricle communication headset is disclosed. The headset includes a capsule to which a microphone boom and the earpiece are affixed. The earpiece is composed of a flexible sound tube terminating in a sound tip surrounded by ... | 09/05/1989 |
| 4754484 | Convertible handset/headset for telephone A miniature telephone handset that is convertible into a headset for use in conjunction with a telephone base unit. The telephone handset includes a housing, a microphone mounted near one end of the housing, an earphone mounted near the other end of the h... | 06/28/1988 |
| 4420657 | Adjustable headset A lightweight adjustable headset is disclosed for use with telephones. The headset includes a housing having a microphone boom mounted in a manner to permit rotational and translational movement. A support member is provided for affixing the headset to th... | 12/13/1983 |
